Sound amplifier



FIG. 1 is a perspective view of a sound amplifier showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a verticality section view of the sound amplifier of FIG. 2; and,

FIG. 9 is a view of using state of the sound amplifier of FIG. 1.

Broken lines are included herein for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design of a sound amplifier, as shown and described. 